Numbers k such that 22*10^k + 7 is prime.

Terms

a(0) =0a(1) =1a(2) =2a(3) =9a(4) =13a(5) =14a(6) =15a(7) =17a(8) =22a(9) =23a(10) =80a(11) =297a(12) =393a(13) =524a(14) =591a(15) =1107a(16) =1135a(17) =1179a(18) =1442a(19) =2819a(20) =3549a(21) =3756a(22) =3837a(23) =4903a(24) =5277a(25) =5639a(26) =7230a(27) =13147a(28) =14828a(29) =16158